If you measure a parallax of 0.006 arc seconds from an observatory on the ground, your uncertainty will be about _____
A) 10 percent
B) 75 percent
C) 30 percent
D) 57 percent
C
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Through the year, the Sun moves eastward among the stars following a line called the _____, the apparent path of the Sun among the stars
A) zenith B) nadir C) ecliptic D) zodiac
When monochromatic light illuminates a grating with 7000 lines per centimeter, its second order maximum is at 62.4°. What is the wavelength of the light?
A) 336 nm B) 752 nm C) 633 nm D) 452 nm E) 363 nm
Steep-sided stratovolcanoes are made from lava that
A) is as runny as liquid water.
B) has a medium viscosity.
C) has a high viscosity.
D) can have any viscosity.
Avogadro's number is related to the universal gas constant R and the number of moles n by:
a. NA = Rn b. NA = R/n c. NA = n/R d. Avogadro's number cannot be related to these two quantities alone.